Hello, No idea on at commands but found something similar check at
http://search.inside.abb.com/library/Download.aspx?DocumentID=3BDD015274&LanguageCode=en&DocumentPartId=&Action=Launch
Are you looking something similar

Answers

2

Freelance has no inbuildt AT interface. But industrial GSM modems provide digital I/Os or fieldbus like Modbus TCP. If you need an alarm modem for AC 700F I can suppose that only few alarms has to be forwarded. Then a modem like the attached one could fit to your application.